Help setting up Command+Shift for Sub object selection on Spacemouse

I have shift working correctly on my left spacemouse button. I used the 3D connexion app in my mac Preferences, however, when I try the same method for Command+Shift on the right mouse button it does not work. I am trying to get the right button to allow sub object selection when I’m working in SubD. Is there maybe a workaround or am I out of luck?
Thanks